China’s researches of public relations theory began in the mid of 1980s.Three themes have been formed in the following thirty years, which are namely the persistent introduction of new theories and ideas, the formation of public relations theory system with Chinese characteristics, and the innovation of public relations paradigm. Accordingly, the construction of China’s public relations theory addresses three pairs of interactive relations, which are namely the one between Chinese and international theories, the one between theory and practice, and the one between old and new paradigms. This paper tries to organize and summarize these three themes,three relations and the intellectual heritage of China’s researches of public relations theory.